136908507 has 16 divisors (see below), whose sum is σ = 191435040. Its totient is φ = 86913792.

The previous prime is 136908491. The next prime is 136908511. The reversal of 136908507 is 705809631.

It is not a de Polignac number, because 136908507 - 2⁴ = 136908491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136908007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4428 + ... + 17129.

It is an arithmetic number, because the mean of its divisors is an integer number (11964690).

Almost surely, 2^136908507 is an apocalyptic number.

136908507 is a deficient number, since it is larger than the sum of its proper divisors (54526533).

136908507 is a wasteful number, since it uses less digits than its factorization.

136908507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21662.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 136908507 is about 11700.7908707061. The cubic root of 136908507 is about 515.3988891289.

The spelling of 136908507 in words is "one hundred thirty-six million, nine hundred eight thousand, five hundred seven".